syzbot


KASAN: use-after-free Read in inc_rlimit_ucounts
Status: upstream: reported C repro on 2021/07/08 07:56
Reported-by: syzbot+6913b594227aa60e1925@syzkaller.appspotmail.com
First crash: 74d, last: 43d

Cause bisection: introduced by (bisect log) [merge commit]:
commit 51c3b916a4d7e24b4918925965867fdd9bd8dd59
Author: Dave Airlie <airlied@redhat.com>
Date: Tue Mar 16 06:45:12 2021 +0000

  Merge tag 'drm-misc-next-2021-03-03' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

Crash: unregister_netdevice: waiting for DEV to become free (log)
Repro: C syz .config

Fix bisection: fixed by (bisect log) [no-op commit]:
commit 7d5b2cbe7a8f918641e9c69f07bc2fe0989221a0
Author: Masahiro Yamada <masahiroy@kernel.org>
Date: Mon May 10 06:34:50 2021 +0000

  comedi: remove editor modelines and cruft (again)

Patch testing requests:
Created Duration User Patch Repo Result
2021/07/08 08:30 20m thisisrast7@gmail.com upstream error

Sample crash report:

Crashes (3):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-smack-root 2021/07/04 16:37 upstream 3dbdb38e2869 55aa55c2 .config log report syz C KASAN: use-after-free Read in inc_rlimit_ucounts
ci-upstream-kasan-gce-root 2021/08/04 22:09 upstream 251a1524293d b97d64c9 .config log report info KASAN: use-after-free Read in inc_rlimit_ucounts
ci-upstream-kasan-gce-smack-root 2021/07/04 16:12 upstream 3dbdb38e2869 55aa55c2 .config log report info KASAN: use-after-free Read in inc_rlimit_ucounts